Fan



FIG. 1 is a perspective front view showing a fan,

FIG. 2 is a front view,

FIG. 3 is a rear view,

FIG. 4 is a right side view, with respect to FIG. 3,

FIG. 5 is a left side view, with respect to FIG. 3,

FIG. 6 is a top side view, with respect to FIG. 3.

FIG. 7 is a bottom side view, with respect to FIG. 3,

FIG. 8 is an enlarged view of the hub in correspondence of the root of a blade, with respect to FIG. 1; and,

FIG. 9 is a perspective rear view.

The broken lines illustrate portions of the fan which form no part of the claimed design. 

CLAIM The ornamental design for a fan, as shown and described. 